src/fuzz/fuzz-udev-database.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "device-private.h"
   4 #include "fd-util.h"
   5 #include "fs-util.h"
   6 #include "fuzz.h"
   7 #include "tmpfile-util.h"
   8
   9 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  10         _cleanup_(sd_device_unrefp) sd_device *dev = NULL;
  11         _cleanup_(unlink_tempfilep) char filename[] = "/tmp/fuzz-udev-database.XXXXXX";
  12         _cleanup_fclose_ FILE *f = NULL;
  13
  14         if (!getenv("SYSTEMD_LOG_LEVEL"))
  15                 log_set_max_level(LOG_CRIT);
  16
  17         assert_se(fmkostemp_safe(filename, "r+", &f) == 0);
  18         if (size != 0)
  19                 assert_se(fwrite(data, size, 1, f) == 1);
  20
  21         fflush(f);
  22         assert_se(sd_device_new_from_syspath(&dev, "/sys/class/net/lo") >= 0);
  23         (void) device_read_db_internal_filename(dev, filename);
  24         return 0;
  25 }